玻璃纤维-碳纤维混杂增强PCBT复合材料层合板的制备及低速冲击性能  

Preparation and low-velocity impact properties of glass fiber-carbon fiber hybrid reinforced PCBT composite laminate

作　　者：杨斌[1] 章继峰 周利民[2] 

机构地区：[1]哈尔滨工程大学智能结构与先进复合材料实验室,哈尔滨150001 [2]香港理工大学机械工程系

出　　处：《复合材料学报》2015年第2期435-443,共9页Acta Materiae Compositae Sinica

基　　金：港澳台科技合作专项(2014DFH50060)

摘　　要：采用环状对苯二甲酸丁二醇酯(CBT)预浸料,利用真空袋辅助热压工艺制备了玻璃纤维机织布-碳纤维机织布/聚环状对苯二甲酸丁二醇酯(GF-CF/PCBT)混杂复合材料层合板。利用双悬臂梁(DCB)和三点端部开口弯曲(3ENF)试验对连续纤维增强PCBT复合材料层合板的层间强度做出评估。同时,利用低速冲击试验结合Abaqus/Explicit有限元仿真重点考察了混杂纤维增强PCBT复合材料层合板的低速冲击性能。试验结果表明:尽管CF/PCBT复合材料层合板具有优异的层间性能,当冲击能量为114.3J时,由于CF自身的脆性,CF/PCBT复合材料层合板被完全穿透,而GF-CF/PCBT混杂复合材料层合板只在表面形成凹痕。与纯CF增强PCBT复合材料层合板相比,铺层形式为[CF/GF/CF]25的GF-CF/PCBT混杂复合材料层合板的抗冲击损伤能力提高2倍。仿真得到的云图显示,冲击引起的应力在CF中的分布区域要明显大于在GF中的分布区域。The glass fiber woven fabric-carbon fiber woven fabric/poly(cyclic butylene terephthalate)(GF-CF/PCBT)interlaminated hybrid composite laminates were prepared by vacuum bag assisted hot-press processing from the cyclic butylene terephthalate(CBT)prepregs.Double cantilever beam(DCB)and three-point end notched flexure(3ENF)tests were adopted to estimate the interlaminar performance of the obtained continuous fiber reinforced PCBT composite laminates.Meanwhile,the response of hybrid fiber reinforced PCBT laminates under low-velocity impact was mainly investigated by the tests and Abaqus/Explicit finite element simulation,respectively.The test results show that,despite the excellent interlaminate performance of CF/PCBT composite laminates,CF/PCBT composite laminates are penetrated under the impact energy of 114.3Jdue to the brittleness of CF.As a comparison,the GF-CF/PCBT interlaminated hybrid laminates form merely dent on surface.Compared with pure CF reinforced PCBT composite laminates,the impact strength of GF-CF/PCBT interlaminated hybrid laminates with the layer form [CF/GF/CF]25enhances significantly by 2times.Simulation results show that stress area in CF is larger than that in GF in the resulted stress nephogram.

关 键 词：环状对苯二甲酸丁二醇酯 玻璃纤维 碳纤维 混杂复合材料层合板 低速冲击 有限元仿真 

分 类 号：TQ327[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]